In order to study the impact of puncturing eMBB resources to accommodate URLLC transmission, the authors in [1]} studied the problem of joint scheduling of eMBB and URLLC data transmission according to linear, convex and threshold models of the eMBB rate loss associated with the eMBB resources puncturing. A risk-sensitive approach was introduced in [2]} to mitigate the risk of puncturing eMBB resources. A resource allocation scheduler was proposed in [3]} where the formulated problem considered the overhead associated with the URLLC load segmentation while maximizing the rate utility. A null-space-based spatial puncturing scheduler for joint URLLC/eMBB traffic was proposed in [4]}. The authors in [5]} formulated a URLLC traffic allocation problem by adopting a superposition or puncturing scheme. Practically, when the URLLC service is initiated in the middle of the eMBB transport block, part of eMBB symbols are replaced by and/or superposed with the symbols of the URLLC packet. Accordingly, the reception quality of the eMBB services could be degraded severely.
